/Engine/Source/Runtime/Engine/Classes/Components/ChildActorComponent.h
Sets the class to use for the child actor. If called on a template component (owned by a CDO), the properties of any existing child actor template will be copied as best possible to the template. If called on a component instance in a world (and the class is changing), the created ChildActor will use the class defaults as template.
void SetChildActorClass ( [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [AActor](API\Runtime\Engine\GameFramework\AActor) > InClass )